Sprinkler-head.



J. A. CASS.

BPBINKLBB HEAD unicum: rmzn mm. a4. no1.

y Patented Sept -22, 1908.

IAHES A. CASS, OF BROOKLYN, NEW YORK.

llo. 899,204.

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.rml-BILD.

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Applisalenlisd Dsssnbsr M, 1001. lsrial la. 401,015.

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Be it known that I; Janna A. Cass, of Brookl State oi New York, have inven l Improvements in Sprinkler-Heads, of which the following, taken in connection with the accompanying drawinga,is a, full, clear, and exact description.

This invention relates to certain improvements sprinkler heads for automatic tire extinguishing systems and refers particularly to the general structure of the frame, strut, distributer plate and stopper mechanism.

)ne of the essential objects is to provide a spring frame which is tensioned by the adjiistinent of the strut so that when the integrity of the strut is broken by the burning of the fusible detent or detenta, its resistance to the tension ofthe sprin 'frame will allow the' latter to retract and t ereby more quickly and ra idly.spresd the parts oi the strut to aliow e opening of the stopper.

Another object is to provide the stopper with'a non-corrosive insert or vdiaplir m forming the immediate cap or cover for t ie water opening through the sprinkler head so as to prevent any possibility of disintegration and conse uent leakage and also to obviate any liabilityof the stopper sticking to itts sgat when released by the breaking of the s ru Another object is to provide a sectional strut constructed in suc manner as to relieve the fusible detenta from severe strains when adjusted for use and lat the'sanie time to allow the parts of said strut to be readily separated and'thrown out of operative oaition immediately upon the destruction o the detenta by heat. c

'A further object is'to provide a rotary distributing head with 'outwardlfv flaring radial channels forming the impact ace for the discharging water' when the -stop r is released so iis to deflect the water in s ieets in all dircctions and at considerable distance from the center of the sprinkler head.

Other'objeets and' oo es will be brought out in the following description.

In the drawin v rea land 2 are respeetively top plla'nsidirontelevation 'of a sprinkler head embodyin the various iea'l tures of my invention. 3 and 4 are sectional views taken ms `tively on lines 3-3 and`4,4,` 2, except that the strut is shown in elevation in Fig. 3. Fig. 5 is an yn, inv the county of Kis, in th` new an tions, the interposed 'tie plate or brace be? tween the end strut sections and one of the datent plates. Fig. 0 is an inverted plan of the rotary'distributing plate.-' Figs. l0, 1l and l2 are perspective views respectively of different parts of the stopper.

In carrying out the objects stated, I provide a spring frame comprising a tubular nipple l-, and opposite outwardly arched spring arms -2- merging in a tubular'hub 3 some distancefrom the nip le 1 forming substantinll y semi-circular w arms rigidly secured at one .end to the nipple 1 and preferably inte al therewith and having their opposite en free to yield toward and from said nipple. This nipple is formed with a central lengthwise water passage' -4 therethrough and is also threaded exteriorly for securenient to one of the pipe iixturea of the water discharging systems not shown.

The outer end of the nipple is substantiall flat and forms a suitab e seat for a lead was er or packing 5-. vupon which is mounted a cap (3- of German silver' or other non-eorrodible material which covers theouter end of the water passage -4, said ca '-6- being enjged by an outer disk f'brass or ot `er suitable metal which is somewhat thicker and heavier than the csp -5-- 'and gradually increases .in thickness tow ard the center for increasing its 'nsA strength and abilityto resist the preesure'of the vpassage -4 thereby preventing the lateral displacement of the cap 6v and same timoniere effectively bracing the inner edges of the packing -5- against its seat to avoid any ossibility of leakage at this joint.

Thel pac ing -5-, cap 6 and disk -7 const-itutcn sectional stopper, the disk -7.- being provided on its outer face with a central depression 8 for the recrpnoii and retention against lateral displacement of the adjacent end of the strut. liiis strutis interposed midway between the spring arms The L-shape members are arranged in an upright position with their bases at the opposite end of the strut and rovided with comparatively small tapering osses -l3., one of which is seated in the recess 8 in the adjacent face of the disk -7-'while the other boss is seated in a similar recess` e1-tin the inner end of the adjusting screw v9- to hold the strut against'lateral dispbwement relative to the disk -7-and sere The inner faces ofthe bases of the L-shape members -10- are formed with grooves -15- constituting seats for the ad'acent ends of the tie piece -l l` and fusible detent plates l2. 'lhis tie. piece. I lis formed with a central transverse rib-ltagainst the oplxmsite face of which the adjacent ends of t e detent plates -12- abut "hilo the opposite ends of said detent plates are seated m and abut against -the bases of Vthe grooves -l5-, said detent plates and adjacent faces of the tie piece ll being inclined outwardly or laterally and ax'c located wholly at one side of the axis or center line of the water passa 'e and frame.

The opposite ends o the tie piece llterminate short of the basis of the oove -15- and the intervenin 'space is ti led in with fusible material suc as soft solder, similar fusible material being interposed between the adjacent faces of the tie piece -l l and detent platos -12- to normally lock or tie said detent plate to the tie plate while the latter is secured by `similar fusible material 17 to the adjacent faces of the strut sections 10. The meeting ends of these strutsections' 10 are slightly sepa. rated and the intervening specs is hlled in with fusible material. i l

The grooves -15- and also the tie piece -11- and delent plates -12 are located wholly at 'one side of the axis of the frame or at one side of a straight line drawn between the bosses -13 so that when the fusibley material is destro cd by heat, the tension-of the a ring arma w ich is produced by adjusting t e screw 9- against the strut operatea to separato the parts of the strut and to throwthem out of position with a quick snap action.-

The screw -9- is adjustable in athreaded aperture in the hub -3- and is provided at its outer end with a-hand piece 20 .vhereby it may be rotated, and upon the seems outer ond of this screw and outer face of thn hub -3- is joumaled a rotary distributorl plato -2l having outwardly llaring wings the wings-42.- beingprovded on theiroutor .sides wlthoutwardly and u wardly llaring rccesses -2-t and lwvele( faces `-25 for the purpose of' distributing the water radially in all directions in thin sheets some diatance'from the sprinklerhead, the impact of the water against t which are adjacent 'the slots -23- serving tr rtato'thc head thereby lending centrifugal force to thro-w the water still farther from the sprinkler head and at the same time to more evenly distribute it over the underlving surface or around the room in which the sprinkler head is located.

In operation, assuming that the strut and stopper sie firmly adjusted by the screw 9 with sulcient force to slightly tension the spring arms -2-, then as'soon as the fusib ebend between the parts -1 0-, f-l 1 and 1-1 2- is disintegrated byheat, said parts 10, -1l and l2 tend to fall apart and are positivelyforced out of o crative connection withV eac i other and wit i the stopper first by the relaxation of the tensioncd spnn arms 2, and second by the rassure o the water against. the stopper, tris disintegration of the strut bein facilitated by rea-f son of the fact that the race platea -12-.

are located wholl at one sido of a direct lino d'rawn between t e bearings of the strut sections -10- at their points of engagement with ,the disk -7 and screw 9-, it being understood thatthcso plates f-12 incline, outwardly from said straight line and that they en 'age the sections 10. wholly at one sido o the axis of thestrut bearings so that when end pressure* is ap lied upon tho sections -l0, it tends totilt the meeting ends of said sections in the direction of the brace plates -12-, this action bein instantaneous upon the vtlixaintcgration o the fusible bond and therefore, the strut sectionsV are displaced or thrown forcibly to the side of the axis at which .the brace plates 12 are located.

What vIl claim is:

l. In a sprinkler head, a stopper, and means for holding said stopper in place including a strut consistin; arranged end .to end, )races engaging the bases of the strut sections, a tie piece botween the braces and strut section, and fusible material uniting tho braces` to the tie piece.

2. In a ksprinkler head, astrut consistin i of L-shape sections arranged end to on with their bases at the'oxtreme end of tho strut and provided with Pointed bearings,

va tic piece extending across thoy meeting ends of the L-shupo sections and provided with a rib on its vouter face, outwardly inclined of L-shap'e sectionsv beveled faces -25- lso ` lstes wholly st one nde of the exis of 1s rhs struytmsnd sngsgingthebseesofssld I sections, brsee shspe sections, end s 'fusible bond between reces snd tie piece. v 4. In s'slprinkler heed, s tubulsr nip le, s Germsn ver disk covering the disc erge end ofthe niple, s brsss disk resting inst 2o the Germsn sl ver disk, snd mesns inc uding sl tensioning screw for holding the disks in sce. p In witness whereof I hsve' hereunto s et my hsnd this 16th dsy of December 1907.

JAMES A. CASS.

Witnesses:

Fnnnx. W. Esmsxs, www E. Axmnssnn. 

